Digital Commons Network^™

Race, Class And Gender In Engineering Education: A Quantitative Investigation Of First Year Enrollment, Canek Moises Luna Phillips

Open Access Dissertations

Research explanations for the disparity across both race and gender in engineering education has typically relied on a deficit model, whereby women and people of color lack the requisite knowledge or psychological characteristics that Whites and men have to become engineers in sufficient numbers. Instead of using a deficit model approach to explain gender and race disparity, in the three studies conducted for this dissertation, I approach gender and race disparity as the result of processes of segregation linked to the historic and on-going perpetuation of systemic sources of oppression in the United States. In the first study, I investigate …

Essays On Malawian Agriculture: Micro-Level Welfare Impacts Of Agricultural Productivity; Profitability Of Fertilizer Use; And Targeting Of Fertilizer Subsidy Programs, Francis Addeah Darko

Open Access Dissertations

This dissertation comprises of three essays that address different aspects of agriculture in Malawi using a two-wave panel data collected by the National Statistical Office of Malawi with support from the World Bank Living Standards Measurement Study – Integrated Surveys on Agriculture (LSMS-ISA) program. Each essay stands alone as an independent study because of differences in research questions and the methodologies used in addressing the questions.

The first essay analyzes the micro-level welfare impacts of agricultural productivity. Welfare is measured by various dimensions of poverty and food insecurity; and agricultural productivity is measured by maize yield and value of crop …

Local Matters: Regulating Economic Development In Two Indiana Cities, Christopher A. Malackany

Open Access Dissertations

Since the 1970s, local governments have utilized similar redevelopment tools to counteract economic dislocations but cities often experience divergent development pathways. This project explores why these divergences occur through a comparative case study of a college town and factory town in Indiana. Qualitatively, I compile data from interviews with city officials, local government documents, and related research to address the towns’ divergent development paths. Two findings are noteworthy. First, a locality’s extant resources act as path-dependent liabilities for local growth. Second, state and federal aid greatly assists local development. Yet the defunding of these revenue streams, and a city’s reliance …

China Twenty Years After: Substance Use Under Rapid Social Changes, Xiaozhao Y. Yang

Open Access Dissertations

This dissertation discusses how China’s rapid modernization and social transformation over the last twenty years since a series of reforms at the end of 1980s contribute to the changes in substance use behaviors. Specifically, there are three individual empirical chapters in this dissertation, each exploring one dimension of social change and its association with substance use. First, I have demonstrated how substance use can be a protective factor against unemployment over the long term, especially against the background of massive layoffs among former socialist industrial workers and landless peasants during this period. Second, another chapter examines how social mobility (i.e. …

Early Parental Loss, Socioeconomic Stressors, And Health In Later Life: Evidence For Gender Disparity, Rong Fu

Open Access Dissertations

Drawing from the stress process model and the cumulative disadvantage theory, this dissertation examined how childhood and later life stressors affected cognitive and subjective health in older adults. Using three main articles, this dissertation investigated (1) the effect of early parental loss on cognitive well-being in Chinese oldest old; (2) the effect of intergenerational socioeconomic mobility on cognitive and subjective health in advanced age; and (3) the effect of different dimensions of socioeconomic status and perceived financial strain on subjective health in later life. Data were derived from the 2002 and 2005 waves of the Chinese Longitudinal Healthy Longevity Survey. …

A Cross-Sectional And Mixed-Method Assessment Of Safety Culture And Safety Climate At A Regional Airline, Micah S. Walala

Open Access Dissertations

The researcher applied a mixed methods approach to conduct a cross-sectional assessment of the safety culture, safety climate, and SMS at a regional airline in the United States. Data collection techniques were comprised of interview, on-line-survey, and a focus group activity. Participants in the current study were maintenance technicians, flight attendants, dispatchers, pilots, and managers. Results indicated significant differences of perception of safety climate, safety culture, and Safety Management System between the maintenance technicians and flight attendants. The length of time a participant had worked at the subject airline and age of the participant appeared to be significant factors of …

The Things They Carried: The Biological Residue Of Childhood Misfortune, Patricia M. Morton

Open Access Dissertations

There is a well-established relationship between childhood misfortune and adult health, but how these early-life experiences “get under the skin” to later manifest as poor health is less clear. To elucidate this process, this dissertation investigates (1) how childhood conditions influence immune functioning and (2) whether these physiological consequences of early misfortune lead to poor health, indicated by ischemic heart disease (IHD) onset. Guided by cumulative inequality theory and biological embedding, this dissertation also examines adult health lifestyles and socioeconomic status (SES) as possible mechanisms linking childhood misfortune to inflammation and IHD in later life. Data come from six waves …

The Role Of Workplace Supervisor Support In Cargivers' Marital Relationships, Kenona H. Southwell

Open Access Dissertations

Family caregivers make important contributions to care recipients and the economy. However, providing care for ill or disabled family members can be challenging, particularly when the role of caregiver is accompanied by additional roles such as employee, spouse, and parent ( Hammer & Neal, 2008). There is some evidence that the demands of caregiving may negatively influence the quality of caregivers’ marriages (Bookwala, 2009). Much of caregiving research, however, is focused on the influence of caregiving and multiple caregiving roles on caregivers’ health (see Pinquart & Sörensen, 2011), but less attention has been paid to other aspects of caregivers’ lives …

Neural Activity Reveals Effects Of Aging On Inhibitory Processes During Word Retrieval, Ranjini Mohan

Open Access Dissertations

Word retrieval difficulties are one of the most frustrating problems in older adults. Poorer access to phonological (speech sound) representation of the target word has been postulated as the underlying deficit, supported by findings of improvement in word retrieval after phonological priming. But the great variability in naming performance among older adults may reflect cognitive scaffolding or compensatory neurophysiological processes related to maintenance or decline of naming abilities. In order better understand aging effects in the underlying neurophysiological changes associated with phonological retrieval, the present study examined electrophysiological correlates of phonological priming and word retrieval in adults across the lifespan. …

Understanding The Communicative Processes Of Baby Boomer Women Adjusting To Retirement: Connecting Micro And Macro Discourses, Patricia E. Gettings

Open Access Dissertations

Baby Boomers are changing the face of retirement in the United States. For example, retirement traditionally refers to the time when an individual who has worked full-time for the majority of her life chooses to entirely and permanently exit the workforce, but now includes a range of formations (e.g., bridge employment). Baby Boomer women are most affected by this “new” retirement because they have worked a broader range of jobs for longer periods of time than ever before. Transitioning to retirement implicates processes of adjusting beyond just a change in one’s employment status as retirees potentially confront instrumental (e.g., where …